Joseph bull little



J. B. LITTLE.

SAFETY WATER GAGE.

,156. Patented July 6, 1886.

. a w j a D m a q."

(No Model.)

IIIIIII II/II UNITED STATES PATENT OFFICE.

JosErLI BULL LITTLE, or WINNIPEG, MANITOBA, CANADA.

SAFETY WATER-GAG E.

SPECIFICATION forming part of Letters Patent No. 345,156, dated uly 6,1886.

Application filed February 18, 1886.

To aZZ whom it may concern:

Be it known that I, JOSEPH BU L LITTLE, a subject of the Queen of GreatBritain, residing at Winnipeg, in the Province of Manitoba and Dominionof Canada, have invented certain new and useful Improvements in Gages orIndicators for Steam-Boilers; and I do hereby declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to gages or indicators for steam-boilers; and theobject of the invention is to provide an improved arrangement of valvesand means for holding the same open, and closing or allowing them to beautomatically closed in the event of the glass sighttube being broken.

A further object of the invention is to improve the details ofconstruction of devices of this class, and to provide a device whichwill be thoroughly positive and effective in its operation.

With these ends in view the invention'consists in the combination, witha glass tube and its mountings, of valves located in said mountings anda jointed rod connected with the valves.

The invention further consists in the details of construction andcombinations of parts hereinafter fully described, andpointed out in theclaims.

In the drawings, Figure 1 is a vertical section of the same. Fig. 2 is adetail cross-section on the line :0 m, Fig. 2. Fig. 3 is a detailcross-section on the line 3 y, Fig. 2. Fig. 4: is a detail view of therod for holding the valves from their seats when the glass sighttube isintact, and for allowing the valves to engage the seats when the glasstube is broken. Fig. 5 is a detail View of one of the valves.

Corresponding parts in the several figures are denoted by the sameletters of reference.

Referring to the drawings, A A represent the mountings for receiving theupper and lower ends of the glass gage-tube B, said mountings beingprovided with water-tight joints a. v

G 0 represent the inlet and outlet tubes, which are each preferablyprovided with a stop-cock. (Not shown.)

D represents valve-seats which are formed in the mountings A A, andwhich are adapted Serial No. 192,356. (No model.)

from contact with the seats, thus allowing a free circulation throughthe-sight-tube.

In the inner ends of the valves E E are formed openings or seats d,which are adapted to .receive the ends of a rod, F, for supporting thevalves from contact with the valve-seats. This rod or support consistsof two long rods, 0, connected pivotally at their inner ends by a shortrod, f, upon the side of which, midway its ends, is pivoted a cross-rod,g, which normally is in contact with the sides of the glass tube to holdthe jointed rod rigid and hold the valves from contact with thevalve-seats. Should the glass gage-tube be broken, the force of thewater will move the valves to their seats, the jointed rod collapsing orshortening. This action is accomplished, since the two long rods arepivotally connected, thus allowing them sufficient lateral movement toenable the valves to fit tightly upon the valve-seats. The cross-rodplays an important part, since it holds the jointed rod rigid, and thusholds the valves from their seats, said cross-rod occupying an obliqueposition within the sight tube, and bearing against the inner sidesthereof.

Having thus described my invention, I claim 1. The combination, with aglass tube and its mountings, said mountings having valveseats, ofvalves to close said seats and means located within the glass tube forsupporting the valves from their seats, as set forth.

2. The combination, with a glass tube and its mountings havingvalve-seats and valves to close the same, of a jointed rod locatedwithin the glass tube and connected with the valves, as set forth.

3. The combination, with a glass tube and its mountings, said mountingshaving valveseats and valves, of a jointed rod located in the tube andconnected with the valves and a cross-rod pivoted to one of the sectionsof the jointed rod, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH BULL LITTLE. Witnesses:

DAvII) OGILVIE, FRED. O. WoDEE.

